Water-heater unit



Feb. 28, 1928.

1,660,344 L. R. MENDELSON WATER HEATER UNIT Filed July 15, 1927 2 Sheets-Shea: 1

gvvuwnto'o O/QWMM MMYW Feb? 28, 1928.

L. R. MENDELSON WATER HEATER UNIT Filed July 15. 1927 2 Shets-Sheet 2 Patented Feb. 28, 1928.

v I tee-0,344 uialrso sraras PATENT. car es LOUIS R. MENDELSOH, OF CLEVELAND, OHIO, ASSIGNOR T0 TEE COMPANY, OF CLEVELAND, OHIO, A CORPORATION nc'rs'raneiu HEATER or onto.

WATER-HEATER UNIT.

Application filed July 15,.

This invention relates to heater units, such as are used for domestic hot water supply systems, either by insertion of a unit into the fire box of a furnace or boiler or by the use of several units connected inmultiple and enclosed within a jacket above a gas burner.

These heater units include two superposed hollow members each having. radiating arms, said arms communicating from member to member at their outer ends, and the'unit being provided with either or both of lateral and longitudinal pipe connections for the circulatingwat-er.

The present invention relates more particularly to the lateral pipe connections, its object being to provide such connections as will lead the circulating water supplied to one member directly or immediately to its central chamber, from which it flows outwardly and then inwardly through the radiating arms to the central chamber of the other member, from which it is delivered to the discharge pipe by a direct passage or channel, thereby avoiding any possible short circuit or short cut from pipe to pipe, and insuring the longest possible travel of the water through the unit with maximum heat absorbing ability.

The exact nature of the invention will be readily noted from the following description taken in connection with the accompanying drawing in which Fig. 1 is a plan view of the unit; Fig. 2 is a side elevation of the same, partly broken away to show interior construction; Fig. 3 is a section along the line 33 of Fig. 2; Fig. 4 is a section along the line 44, Fig. 2; Fig. 5 is a section along the line 55 of Fig. 2; and Fig. 6 is a section along the line 6-6 of Fig.1.

The drawings show a single unit, the parts whereof are preferably portions of the same casting, although they may be otherwise secured together. Each unit includes two generally like members of which the upper is marked 2, and the lower 2 each of said members being suitably hollowed out, as by coring the casting, to provide a central portion or hub 3 with a central chamber 4 therein, from which hollow hub radiate a plurality of arms or lobes 5 which diverge or increase in width outwardly, each of the members shown being provided with four such lobes. The several lobes are all hollow, their cavities 6communicating through the other,

1011068, for reasons which will later 1927. Serial N0. 205,994.

passages 7 in the hollow necks 8 with the central chamber 4:. The two members of the unit are superposed upon each other with theradiating lobes, as it were, in staggered relation, the cavity 6 within a lobe of each member connnunicating through openings or channels 9 with the cavities in two of the lobes of the other member.

The two members are provided with en openings 10, coaxially aligned with each formed for plugging or for connection of fittings, each of said openmgs lead ng to one of the central chambers the said chambers of the two members being separated by the solid walls 11. When viewed in plan, therefore, as in Fig.1, the unit looks generally like two four-leaved shamrocks superposed upon each other. i

With this. arrangement fluid admittedi to one member through. chamber 4- other opening 10 by way of the radial pas sages 7 to the cavities 6, thence" through an opening 10 enters its channels 9 to the cavities, 6 of the other member and by way-of the necks 7 to. the second opening 10 sage with full opportunity for transmission or 11absorption of heat through the metal is fittings or other parts leading to circulating a, pear. This is accomplished in the preseiit construction by special formation of the two members of the unit so that each is provided with a lateral port or opening and a passage leading therefrom directly or im mediately to its central chamber 4, so that if the lateral passages are used circulating fluid is compelled to travel first to the central chamber 4 of one member and then successively outwardly and inwardly through the lobe cavities and channels and to the central chamber of the other member, from which it is discharged.

Any suitable arrangement is'suflicient for the purpose, but in the present structure the result is accomplished by special formation of two lobes, one of each member, and of the portions contiguous thereto.

In the arrangement shown in the drawings, to provide the lateral openings or connections referred to, superposed portions of threaded as shown or otherwise and is compjelledto flow to the According to the present invention means provided for the lateral connection of a quite circuitous {ms 1 two lobes, one of each member, are specially formed and are directly joined by connecting metal, although: the passages be tween them are separate and distinct. For example, a portion of one of the lobes in the upper member, shown in section in Fig. 3, is specially formed to provide a connection 12 threaded for reception of a circulating pipe and having a passage communicating by the channel 13 directly with the chamber 4 at the center of said member, a portion of the wall of the conducting channel 13 being formed by a wall 15 01 the casting, which separates the channel 13 from the chamber 16 in the remaining portion of the lobe, said chamber 16 communicating with the central chamber 4 by a more or less restricted passage 16. i A like construction is found in the lower unit 2, as shown in Fig. 4, where again the lateral connection 12 communicates by a channel or passage 13 with the central chamber 4 and is shut oft from short circuiting communication with the chamber 16 by the wall 15 and restricted opening 16. i

The two lateral connections 12, as stated, are in superposed lobe portions and are joined by a solid mass 17 of metal between them. They are also parallel and open at their outer ends through a common plane surface 14: of the metal.

With this arrangement a single unit may be inserted into the fire box of a furnace or boiler with two circulating pipes connected to it, one to each of its members, and either or both of said pipes may be connected either to the end opening or to a lateral opening. If connected to the lateral openings the pipes are parallel. Several units may also be superposed and connected in multiple by nipples between them, the upper and lower units having circulating pipes connected either to their lateral or end openings. In any case,:whetl1er the pipes are connected to the end or side openings the circulating water is led directly to or is carried away from the central chamber and has no opportunity to short circuit to an end of one of the radiating "arms or lobes, but follows'the longer path with greater opportunity for heat absorption.

What I claim is: i r

1. A heating unit, comprising a. pair of superposed hollow members, each having a chambered central hub and hollow radiating lobes, the lobes of the two members communicating near their outer ends, one

of said members having a lateral connection to its hub chamber independent of any lobe cavity, and means preventing flow from said connection to any lobe except by way of the hub chamber. 1 V

2. heating unit, comprisinga pair of superposed hollow members, each having a chambered central. hub and hollow radiating lobes, the lobes of the two members communicating near their outer ends, one out said members having a lateral connection to its hub chamber and means preventing flow from said connection to any lobe except by way of the hub chamber,

In testimony whereof I hereby afiix my signature.

LOUIS R. MENDELSON. 

